This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 17 |
| 3 | 1027 |
| 4 | 123464 |
| 5 | 23030612 |
| 6 | 5918918145 |
| 7 | 1953335236481 |
| 8 | 790541795804221 |
| 9 | 379916850888632162 |
| 10 | 211720519858133280231 |
| 11 | 134359691058417334173117 |
| 12 | 95719564240981718602134049 |
| 13 | 75674822191817499226090337378 |
| 14 | 65766024754772296807292428860854 |